Answer:

The elemental components of organic matter are cycled through the biosphere in an interconnected process called the biogeochemical cycle.

Explanation:

Human activities have greatly increased carbon dioxide levels in the atmosphere and nitrogen levels in the biosphere. Altered biogeochemical cycles combined with climate change increase the vulnerability of biodiversity, food security, human health, and water quality to a changing climate.

Recently, people have been causing these biogeochemical cycles to change. When we cut down forests, make more factories, and drive more cars that burn fossil fuels, the way that carbon and nitrogen move around the Earth changes. These changes add more greenhouse gases in our atmosphere and this causes climate change.

The organisms that occupy the decomposer trophic level of the food web on Earth are vital to the existence of life on the planet. Bacteria, fungi and worms take the dead and decaying material and break it down (decomposition) so that the components can be recycled through the biogeochemical cycles.

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